2016 LML to tune and delete or not?
- Thread starter Rudy1
- Start date
Only con is no more warranty.
I’m in the same boat same miles and that’s the only thing keeping mine stock.
I know the cp4 has its issue. A Fass fuel pump set up would help
The CP4 our alot
I already have no warranty (truck has rebuilt title). Truck has 37,000 miles on it.
I'm running a FASS 150, still on the fence about swapping out the CP4 for a 3.
A good friend is on the team that does warranty investigation for the Duramax platform. He says the majority of failures also had water or gasoline in the fuel. He says the issue is blown out of proportion.
I absolutely plan to delete mine, I'm getting occasional codes about my def tank heater.
I plan to install a new passenger side LB7 federal emissions up pipe / larger downpipe / cold air intake (already have a L5P hood) and a 4" exhaust.
Downpipe and intake are strictly based on what Idaho Rob found when tuning his stock emissions LML. He saw big gains from those two modifications.
I'm running a FASS 150, still on the fence about swapping out the CP4 for a 3.
A good friend is on the team that does warranty investigation for the Duramax platform. He says the majority of failures also had water or gasoline in the fuel. He says the issue is blown out of proportion.
I absolutely plan to delete mine, I'm getting occasional codes about my def tank heater.
I plan to install a new passenger side LB7 federal emissions up pipe / larger downpipe / cold air intake (already have a L5P hood) and a 4" exhaust.
Downpipe and intake are strictly based on what Idaho Rob found when tuning his stock emissions LML. He saw big gains from those two modifications.
I’ve heard of several cp4s going out that have a lift pump on them. I think you either get a good one or a bad one, but I’m sure water and gas would be a big contributor too. I’m not convinced that a lift pump helps prolong the life of the cp4. This coming from a guy that’s running a Fass on my LML. I tuned mine at around 10k miles and haven’t regretted it.
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i just rolled 40K on my LML and she is getting deleted shortly. I need that loud sound. Got 5" straight sitting on my shop floor and just need the down pipe to show up and she is getting it:woott::woott:
I just got a 16 lml with 21k about 3 weeks ago.. A week later it was tuned and deleted with a 5" straight and I love it! I wouldn't worry about anything really, just get fuel from high volume places.. My deal is if something goes wrong I want to replace with aftermarket bigger /better stuff anyway..
Deleted mine almost new, now have
102,000 absolutely the best thing I have done to my 2015 Denali duramax, not one problem, but I don't drive it hard, a fass 150 pump is a must if you going to run 150-200 HP setting, I have PPEI tuning with the tranny tunes
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102,000 absolutely the best thing I have done to my 2015 Denali duramax, not one problem, but I don't drive it hard, a fass 150 pump is a must if you going to run 150-200 HP setting, I have PPEI tuning with the tranny tunes
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how is your drone sound with the 5"? i have been told it is brutal around 1500 rpm , i am still doing it either way, just curious hahahaha:woott:
I have a 4" straight pipe with a 3' down pipe, no drone, just good bit of turbo back whistle
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I deleted mine about 10k miles ago and wish I would have done it day one. The frequent regens, DEF, and constantly worrying about starting a fire (I drive in tall brush constantly) pushed me to do it.
I had a drone while towing or pulling a long hill and installed an FTE resonator and all is well. It did quiet down the exhaust significantly, but I wasn't after a loud note.
I had a drone while towing or pulling a long hill and installed an FTE resonator and all is well. It did quiet down the exhaust significantly, but I wasn't after a loud note.
I would do a cp3 swap. The cp4 while it doesn't granade on everyone if it does it can take out the injectors. This may require replacing hard lines, rails, etc
It could get expensive fast. And for me I like the peace of mind knowing that the cp3 almost never takes out anything else if it fails.
Also, they do fail just as regularly with water/gas in them as they do without.
See these two threads here on the TDIClub
http://forums.tdiclub.com/showthread.php?t=387252
http://forums.tdiclub.com/showthread.php?t=299854
The cp4 has no real means of preventing the roller from twisting in the bore. This is one of the main failure points
I had the cp4 fail on my 09 TDI and I know for a fact it didn't have gas or water in it. If you read the thread listed above you will see many claim the same
Just something to think about
Also, if it was me I would do emissions intact tuning
It could get expensive fast. And for me I like the peace of mind knowing that the cp3 almost never takes out anything else if it fails.
Also, they do fail just as regularly with water/gas in them as they do without.
See these two threads here on the TDIClub
http://forums.tdiclub.com/showthread.php?t=387252
http://forums.tdiclub.com/showthread.php?t=299854
The cp4 has no real means of preventing the roller from twisting in the bore. This is one of the main failure points
I had the cp4 fail on my 09 TDI and I know for a fact it didn't have gas or water in it. If you read the thread listed above you will see many claim the same
Just something to think about
Also, if it was me I would do emissions intact tuning
Same here I have a 4 inch with a 3 inch downpipe very little drone and lots of whistle and gives off a nice growl real throaty,I’ve contemplated the 5 inch but after hearing sound clips 4 inch sounds better in my opinion
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Sounds Cool. I so would like to do the same. One these days I’m just gonna say screw it and Getter Done